Automatic Outlook mail due date reminder based on Excel file

This is my first post here. I need your help in developing a mechanism to send an automated outlook mail, when the due date of a project is 7 days away from the current date. The script should preferably run automatically every time the PC is running. without the excel file necessarily open.

In the attached excel file, An email should go of to -email address (Col. D), with subject "Project (Col. B) is due on Due date(Col. C)", and body "Dear Name(Col. A), please update your project status".Test.xlsxAlso, the script should put a check mark on Reminder sent column (Col. E) after the mail is sent, the script should also check if the value of the cell is blank before sending email.

I have scoured the forum for similar problems, and although I found a number of of threads,I am not proficient enough in VBA to modify them to my needs.